Home
Class 12
BIOLOGY
Habitat loss and fragmentation, over exp...

Habitat loss and fragmentation, over exploitation, alien species invasion and co-extinction are the causes for

A

population explosion

B

migration

C

biodiversity loss

D

pollution

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • BIODIVERSITY AND CONSERVATION

    NEW JOYTHI PUBLICATION|Exercise PREVIOUS YEAR HSE QUESTIONS|9 Videos

  • BIOTECHNOLOGY : PRINCIPLES AND PROCESSES

    NEW JOYTHI PUBLICATION|Exercise CBSE Corner|12 Videos

Similar Questions

Explore conceptually related problems

Biodiversity loss occurs due to (i) habitat loss and fragmentation (ii) co-extinction (iii) over-exploitation (iv) alien species invasion. (a) (i) and (ii) (b) (i), (ii) and (iii) (c) (ii), (iii) and (iv) (d) (i), (ii), (iii) and (iv)

When a species becomes extinct, the plant and animal species associated with it in an obligatory way also become extinct. This phenomenon is referred to as (a) fragmentation (b) alien species invasion (c) over-exploitation (d) co-extinction

Assertion : Over-exploitation of a species reduces the size of its population eventually leading to its extinction. Reason : Steller's sea cow is a large, herbivorous, terrestrial mammal which is on the verge of extinction due to over exploitation. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c) If assertion is true but reason is false. (d) If both assertion and reason are false.

Invasion of alien species disrupts ecosystem processes. Justify.

An invasive species which has caused eutrophication in water bodies.

Assertion : The Nile perch introduced into lake Victoria in east Africa led to the extinction of an ecologically unique assemblage of more than 200 species of cichlid fish in the lake. Reason : When alien species are introduced deliberately for economic or other uses, they often become invasive and cause extinction of indigenous species. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c) If assertion is true but reason is false. (d) If both assertion and reason are false.

Select the correct term for the following definitions (I,ii,iii,iv). (i) The taxon is liable to become extinct if not allowed to realise its full biotic potential by providing protection from exotic species/human exploitation/habitat deterioration/depletion of food. (ii) The taxon has been completely eliminated or died out from earth. e.g Dodo (iii) The taxon is facing a high risk of extinction in the wild in the near future due to decreasein its habitat, excessive predation or poaching. (iv) They are species with naturally small populations, either localised or thinly scattered, which are always at risk from pests/pathogens/predators/exotic species.

In India, we have our own species of cockroach Blatta orientalis. But now we can see only American species Periplaneta americana. A. What is the reason for this condition? b. Give another example for the same condition. c. Mention other causes for biodiversity losses.

There are four major causes of accelerated rates of species extinction, which are collectively called as 'the evil quartet'. Which one of the following is not included in 'the evil quartet' ? (a) Over exploitation (b) Pollution (c) Co-extinctions (d) Alien species invasions

Which one of the following is an alien invasive species?